Floral Dome 'Furara', the all-weather greenhouse of Hana-no-Miyako Park (山中湖花の都公園 フローラルドームふらら)

The Floral Dome opened on 8 July 2000 in Hana-no-Miyako Park at Yamanakako, a village in Yamanashi Prefecture. The tourist information site that records the opening explains that the facility was meant to add to the park's general appeal and to offer a place where people could connect through flowers. The park itself is known for its open-air flower fields, of about 300,000 m², set against Mount Fuji; the greenhouse is presented there as an 'all-weather' greenhouse (全天候型温室), that is, one open whatever the weather.

According to the official site's welcome image, the greenhouse has as its themes 'flowers and humans' (ground floor) and 'flowers and nature' (upstairs), and the site invites visitors to discover 'a theme park unlike any before'. It stands in the paid 'Seiryu no Sato' ('stream village') area, which also has an outdoor water-play space and the Myōjin waterfall; a single ticket covers the whole area. Practical classes and workshops, flower arranging among them, are offered. The official site's latest news includes the replanting of the interior with begonias on 14 July 2026.

The Floral Dome rises on two levels. The building's footprint on OpenStreetMap, about 57 m by 39 m, or some 2,200 m², makes it the most extensive building of its surroundings; the aerial photograph of the Geospatial Information Authority of Japan shows a roof with a pale grid pattern, consistent with a glazed covering. The exterior photographs, from the official site and from a visitor in August 2026, show a large curved roof on a metal frame, covered with glass panels, above a curtain wall that is also glazed; the white entrance volume carries a canopy, and glass doors open onto an interior garden.

Inside, the arched glass roof, on a white frame, covers a path lined with potted plants. One also sees a glazed pavilion inside, glass panels set in the floor and metal arches supporting orchids. According to the site, the ground-floor plan has a welcome garden, a herb garden, a 'Core Dome', an English house and garden, a wooden-deck terrace, a theatre (Flower Scope Theater) and a library; the upper floor has, among other things, a 'Hana monogatari' (flower tales) zone, a 'Scale-Out Garden', a flower encyclopedia, a terrace and a hobby studio.

According to a tourist guide, the greenhouse permanently holds more than 500 kinds of plants. The park's site announces tropical plants and flowers of all four seasons, even in midwinter, and its official photographs are captioned tropical flowers and succulents. On the ground floor the welcome garden shows European-style garden flowers through the seasons, and the 'Core Dome' flowers all year in varied colours. A visitor on 25 August 2026 saw orchids there, including white sprays on his photographs, as well as a spider lily of the genus Hymenocallis (ヒメノカリス) and a jaboticaba (ジャボチカバ); in July 2026 the park announced the replacement of the interior plantings with begonias.

The 'Scale-Out Garden', upstairs, invites visitors to explore a flower field at ant height among giant flowers and insects; the park's notice announces it suspended from 1 December 2025 to 15 March 2026. Outdoors, the terrace and rock garden hold more than 300 kinds of herbs and mountain plants from early summer to autumn, according to the same guide.

The greenhouse stands in the paid 'Seiryu no Sato' area, within a park whose flower fields cover 30 hectares. Open all year and sheltered, it suits rainy days as well as winter days, when the outdoors is under snow; a café there sells soft ice cream. The neighbouring area has the Myōjin waterfall (10 m high and 80 m wide according to ANA), a large water wheel and an underground observation zone of lava-tree moulds over a thousand years old.

Spring brings tulips, then come poppies, sunflowers and cosmos; from December to mid-January the park serves as a viewpoint for 'Diamond Fuji'. Access: about 30 minutes by bus from Fujisan station, or about 5 minutes by car from the Yamanakako exit.